OVERVIEW
Since 23 May, fighting has erupted in Marawi city, Lanao del Sur on Mindanao island, between armed forces of Philippines and Maute fighters, allegedly supported by elements of the Abu Sayyaf and Bangsamoro Islamic Freedom Fighters (BIFF). As of 1 June, over 100,000 IDPs have been registered by the regional authorities since 23 May but up to 90% of the 201,000 residents of Marawi are estimated to have fled. According to the authorities, at least 177 people have been killed, including 19 civilians, 120 Maute and allied group members, and 38 security forces personnel. Use of airstrikes by military forces, along enforcement of martial law increase protection concerns.